Method for producing a battery arrangement

Abstract

A method produces a battery arrangement which has a battery tray having a tray bottom and a battery received in the battery tray, wherein the battery lies on the battery tray at support points spanning a support plane and wherein, before the battery is inserted into the battery tray, a thermal compound is applied to the tray bottom and/or to the battery bottom in order to fill, at least in part, a gap between a battery bottom facing the tray bottom and the tray bottom. Before the thermal compound is applied, a distance between the tray bottom and the support plane is determined at least at first measurement points and the thermal compound is applied to the tray bottom and/or the battery bottom in a quantity which is dependent on the determined distances between the tray bottom and the support plane.

What is claimed is: 
     
         1 . An apparatus for application of a heat-conducting paste onto the tray bottom ( 16 ) of a battery tray ( 14 ), which is intended for accommodation of a battery ( 12 ), with an application nozzle that can be moved relative to the tray bottom ( 16 ), with a measuring sensor for scanning the tray bottom ( 16 ) before the application of the heat-conducting paste and which is set up to determine the distance to the tray bottom ( 16 ), and with a control or regulating device, which is set up to determine the distance of at least a number of first measurement points on the tray bottom ( 16 ) to a support plane ( 24 ), which is spanned by support points of the battery ( 12 ) on the battery tray ( 14 ) and to control or regulate the volume flow of the heat-conducting paste discharged by the application nozzle in dependence on the distance, measured at least at the first measurement points, of the tray bottom ( 16 ) to the support plane ( 24 ). 
     
     
         2 . The apparatus according to  claim 1 , wherein the measuring sensor is set up to scan the battery bottom ( 26 ) and to determine the distance to the battery bottom ( 26 ) and wherein the control or regulating device is set up to determine the distance between the battery bottom ( 26 ) and the support plane ( 24 ) at least at several second measurement points before the application of the heat-conducting paste, and wherein the control or regulating device is set up to control or regulate the volume flow of the heat-conducting paste discharged by the application nozzle in dependence on the distance, measured at the second measurement points, of the battery bottom ( 26 ) to the support plane ( 24 ). 
     
     
         3 . The apparatus according to  claim 1 , wherein the measuring sensor is connected mechanically to the application nozzle. 
     
     
         4 . The apparatus according to  claim 2 , wherein the control or regulating device is set up to calculate the volume of the gap at least approximately by means of the first and by means of the second measurement points, and to control or regulate the volume flow of the heat-conducting paste discharged by the application nozzle so that the heat-conducting paste is applied on the tray bottom ( 16 ) and/or on the battery bottom ( 26 ) in a quantity whose volume, if necessary after a drying or curing process, corresponds to the volume of the gap. 
     
     
         5 . The apparatus according to  claim 1 , wherein the application nozzle is set up to apply the heat-conducting paste on the tray bottom ( 16 ) and/or on the battery bottom ( 26 ) in the form of at least one material bead ( 28 ), wherein the at least one material bead ( 28 ) does not cover the entire tray bottom ( 16 ) or the entire battery bottom ( 26 ). 
     
     
         6 . The apparatus according to  claim 5 , wherein the at least one material bead ( 28 ) has a larger cross section in the region of the corners ( 30 ) of the tray bottom ( 16 ) and/or of the battery bottom ( 26 ). 
     
     
         7 . The apparatus according to  claim 5 , wherein the application nozzle is set up to apply the heat-conducting paste on the tray bottom ( 16 ) and/or on the battery bottom ( 26 ) in the form of at least one zig-zag-shaped material bead ( 28 ). 
     
     
         8 . The apparatus according to  claim 1 , wherein the application nozzle is set up to apply the heat-conducting paste on the tray bottom ( 16 ) and/or on the battery bottom ( 26 ) in the form of several material beads ( 28 ) extending parallel to one another, wherein the cross section of the material beads ( 28 ) increases and/or decreases in the direction of their longitudinal extent and/or in a direction perpendicular to their longitudinal extent. 
     
     
         9 . The apparatus according to  claim 1 , wherein the application nozzle is set up to apply the heat-conducting paste on the tray bottom ( 16 ) and/or on the battery bottom ( 26 ) in the form of material drops disposed at a distance relative to one another. 
     
     
         10 . The apparatus according to  claim 1 , wherein the measuring sensor is set up to refer the measured values to a position of the support plane ( 24 ) in space. 
     
     
         11 . The apparatus according to  claim 1 , wherein the control or regulating device is set up to survey a contour of the heat-conducting paste applied on the tray bottom ( 16 ) and to compare it with calculated target values.